Random GUID Generator
Generate random GUIDs in the standard 8-4-4-4-12 format used across C#, .NET, SQL Server, and Windows development — ready to paste into your code
Generate random GUIDs in the standard 8-4-4-4-12 format used across C#, .NET, SQL Server, and Windows development — ready to paste into your code
Generator Settings
Customize your GUID selection
Max available with current settings: 99
Make GUIDs uppercase (A-F)
Wrap GUIDs in braces {...}
Click generate to discover random guids
No guid generated yet
Configure your settings and click generate
Generate GUIDs in the Microsoft-style 128-bit format used throughout .NET, SQL Server, COM, and the Windows registry.
GUID (Globally Unique Identifier) is Microsoft's name for the 128-bit UUID standard, and it is the identifier format you meet everywhere in the Windows ecosystem: C# code calls Guid.NewGuid(), SQL Server stores them in uniqueidentifier columns, COM components and Windows registry keys are addressed by braced GUIDs like {21EC2020-3AEA-4069-A2DD-08002B30309D}, and PowerShell scripts create them with New-Guid. Our Random GUID Generator produces valid, collision-free GUIDs in this standard 8-4-4-4-12 layout, so you can drop them straight into .NET projects, database seeds, installer manifests, or interface definitions without opening Visual Studio.
Every GUID is built from cryptographically secure random bytes and follows the same version-4 structure that Guid.NewGuid() produces, which makes duplicates practically impossible. Choose how many GUIDs you need, generate them in one click, then copy a single value to your clipboard or download the whole batch for bulk work like seeding SQL Server tables or stubbing test fixtures. Because generation happens locally in your browser, the identifiers never leave your machine.
Perfect for various applications and industries
Generate GUIDs for database keys, API testing, and more
Create random GUIDs for automated tests and QA
Use GUIDs as unique tokens or identifiers
Random GUIDs for data modeling and simulation
Everything you need to know about our random guid generator
Pro tips to get the most out of this generator
Toggle braces for C# and registry work, or uppercase to match your codebase's convention.
Generate a large batch and download it to populate databases, fixtures, and import files in one go.
They're the same 128-bit identifier — if you need version control (v4 vs v7), see the UUID generator.
Tools closely related to this one — explore more in the same category
Generate UUIDs (v1, v4, v7) with various formats
Generate random colors in multiple formats for design and development
Generate random hex color codes for design and development
Discover random websites and companies worldwide
Generate random MAC addresses for network testing
Generate random URLs and links for various purposes
Guides and deep dives from our blog that feature this generator
A practical guide for developers and QA engineers on generating realistic fake data for testing — user profiles, payment forms, addresses, and network configurations.
A technical deep dive into the spectrum of randomness — from basic PRNGs to quantum TRNGs — and why cryptographic-grade randomness matters for fairness, security, and trust.